Optical fiber connector

• US 9,638,868 B2
• Filed: 03/23/2015
• Issued: 05/02/2017
• Est. Priority Date: 09/07/2011
• Status: Expired due to Fees

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Inventors: Ott, Michael James
• Primary Examiner(s): Wong, Tina
• Application Number:
  US14/666,026
• Publication Number:
  US 20150260922A1
• Time in Patent Office: 771 Days
• Field of Search: None
• CPC Class Codes: G02B 6/3652 the additional structures being prepositioning mounting areas, allowing only movement in one dimension, e.g. grooves, trenches or vias in the microbench surface, i.e. self aligning supporting carriers
• CPC Class Codes: G02B 6/3806 Semi-permanent connections, i.e. wherein the mechanical means keeping the fibres aligned allow for removal of the fibres dismountable connectors G02B6/3807
• CPC Class Codes: G02B 6/3809 without a ferrule embedding the fibre end, i.e. with bare fibre end
• CPC Class Codes: G02B 6/3821 with axial spring biasing or loading means G02B6/3847 takes precedence
• CPC Class Codes: G02B 6/3822 with beveled fibre ends
• CPC Class Codes: G02B 6/3825 with an intermediate part, e.g. adapter, receptacle, linking two plugs
• CPC Class Codes: G02B 6/3858 Clamping, i.e. with only elastic deformation
• CPC Class Codes: G02B 6/3863 fabricated by using polishing techniques grinding of the fibre ends B24B19/226
• CPC Class Codes: G02B 6/3869 Mounting ferrules to connector body, i.e. plugs
• CPC Class Codes: G02B 6/3888 Protection from over-extension or over-compression
• CPC Class Codes: G02B 6/389 characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type
• CPC Class Codes: G02B 6/3893 Push-pull type, e.g. snap-in, push-on

Abstract

An optical fiber connection system includes a first and a second optical fiber, each with end portions that are terminated by a first and a second fiber optic connector, respectively. A fiber optic adapter connects the first and the second fiber optic connectors. The fiber optic adapter includes a housing and a fiber alignment apparatus. The fiber alignment apparatus includes V-blocks and gel blocks. Each of the fiber optic connectors includes a connector housing and a sheath. The end portions of the optical fibers are positioned beyond distal ends of the respective connector housings. The sheath is slidably connected to the connector housing and slides between an extended configuration and a retracted configuration. The sheath covers the end portion of the respective optical fiber when the sheath is at the extended configuration and exposes the end portion when at the retracted configuration. The end portions of the optical fibers are cleaned when slid between the V-blocks and the gel blocks.

Claims

1. A fiber optic connector for terminating an optical fiber, the fiber optic connector comprising:

a housing extending between a proximal end and a distal end, the housing adapted to attach to the optical fiber; and

a sheath slidably connected to the housing, the sheath slidable between an extended configuration and a retracted configuration, the sheath adapted to slide over an end portion of the optical fiber that extends beyond the distal end of the housing when the sheath is slid to the extended configuration, the sheath adapted to slide over the end portion of the optical fiber to expose the end portion of the optical fiber when the sheath is slid to the retracted configuration, and the sheath including a compression member at a distal end of the sheath adapted to hold the end portion of the optical fiber when the end portion of the optical fiber is being polished, the compression member adapted to release the end portion of the optical fiber when the optical fiber is not being polished.

2. The fiber optic connector of claim 1, further comprising a spring that biases the sheath toward the extended configuration.

3. The fiber optic connector of claim 1, further comprising a crimp member adapted to attach the housing to the optical fiber.

4. The fiber optic connector of claim 3, further comprising a spring that biases the sheath toward the extended configuration, wherein the crimp member is also a spring stop that retains the spring.

5. The fiber optic connector of claim 1, wherein the compression member includes a collet.

6. The fiber optic connector of claim 1, wherein the sheath and the compression member are a monolithic piece.

7. The fiber optic connector of claim 6, wherein a collet is formed in the monolithic piece by slits.

8. The fiber optic connector of claim 1, further comprising a ferrule adaptation adapted to convert the fiber optic connector into an SC compatible connector.

9. The fiber optic connector of claim 8, wherein the ferrule adaptation extends between a first end and a second end, the first end of the ferrule adaptation adapted to abut the distal end of the sheath and the second end of the ferrule adaptation adapted to hold the end portion of the optical fiber when the ferrule adaptation converts the fiber optic connector into the SC compatible connector.

10. The fiber optic connector of claim 9, wherein the housing includes a bore and a shoulder, wherein the sheath and the ferrule adaptation are positioned within the bore, and wherein a shoulder of the ferrule adaptation abuts the shoulder of the bore when the ferrule adaptation converts the fiber optic connector into the SC compatible connector.

11. The fiber optic connector of claim 10, further comprising a spring that biases the sheath toward the extended configuration, wherein the spring urges the distal end of the sheath and the second end of the ferrule adaptation together, and wherein the spring also urges the shoulder of the ferrule adaptation and the shoulder of the bore together when the ferrule adaptation converts the fiber optic connector into the SC compatible connector.

12. The fiber optic connector of claim 10, wherein the ferrule adaptation may be assembled into the bore through the distal end of the housing with a snap-fit connection.

13. The fiber optic connector of claim 12, wherein the snap-fit connection includes at least one resilient member at the first end of the ferrule adaptation.

14. A fiber optic connector for terminating an optical fiber, the fiber optic connector including a ferrule-less configuration and a ferruled configuration, an end portion of the optical fiber adapted to be directly held by alignment features of a first fiber optic adapter when the fiber optic connector is in the ferrule-less configuration, and the end portion of the optical fiber adapted to be held by alignment features of a second fiber optic adapter via a ferrule of the fiber optic connector when the fiber optic connector is in the ferruled configuration, the fiber optic connector comprising:

a housing extending between a proximal end and a distal end, the housing adapted to attach to the optical fiber;

a release member arrangement adapted to release the fiber optic connector from the first fiber optic adapter and also adapted to release the fiber optic connector from the second fiber optic adapter; and

a sheath slidably connected to the housing, the sheath slidable between an extended configuration and a retracted configuration at least when the fiber optic connector is in the ferrule-less configuration, the sheath adapted to slide over the end portion of the optical fiber when the sheath is slid to the extended configuration, the sheath adapted to slide over the end portion of the optical fiber to expose the end portion of the optical fiber when the sheath is slid to the retracted configuration.

15. The fiber optic connector of claim 14, wherein the release member arrangement includes a release member adapted to release the fiber optic connector from the first fiber optic adapter and also adapted to release the fiber optic connector from the second fiber optic adapter.

16. The fiber optic connector of claim 15, wherein the release member is an SC release sleeve.

17. The fiber optic connector of claim 14, further comprising a ferrule adaptation adapted to serve as the ferrule of the fiber optic connector when the fiber optic connector is in the ferruled configuration.